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US 11,306,037 B2Granted
Enhanced efficiency fertilizer with urease inhibitor and nitrification separated within the same particle
AssigneeSabic Global Technologies B.V.
InventorsRavi Hegde, Rajamalleswaramma Koripelly, Chandra Mohana, Radha Achanath, Samik Gupta, Sabeshan Kanagalingam
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Abstract
Fertilizer particles with urease inhibitors and nitrification inhibitors are described herein. The fertilizer particles can include a core particle comprising a urease inhibitor and an outer layer comprising a nitrification inhibitor.
Claims20
A fertilizer particle comprising:
- a core particle that includes a urease inhibitor and a binder;
- and
- a shell comprising a nitrogen fertilizer-containing composition and a nitrification inhibitor, the shell being in contact with the outer surface of the core particle and at least partially surrounding the outer surface.
A fertilizer particle comprising:
- (a) a core particle that includes N-(n-butyl) thiophosphoric triamide (NBTPT) and a binder;
- and
- (b) a shell comprising a solid urea composition and dicyandiamide (DCD).
A method of making a fertilizer particle, the method comprising:
- providing a core particle comprising N-(n-butyl) thiophosphoric triamide (NBTPT) and a binder;
- providing a fertilizer composition comprising molten urea and dicyandiamide (DCD);
- and
- contacting the core particle with the fertilizer composition under conditions sufficient to solidify the fertilizer composition on an outer surface of the core particle to form a solid fertilizer particle comprising the solidified fertilizer composition in contact with the outer surface of the core particle.
1 more element
Dependencies are inferred from the claim text.